Walter ii



(No Model.)

W. H. KNIGHT. FLUID PRESSURE MOTOR. No. 590,228. Patented Sept. 21,1897.

WITNESSES:

UNITED STATES PATENT OFFICE.

WALTER II. KNIGHT, OF NEIV BRIGHTON, NEIV YORK, ASSIGNOR TO TIIECOMPRESSED AIR IOXVER COMPANY, OF I EIV YORK, N. Y.

FLUl-D=PRESSURE MOTOR.

SPECIFICATION forming part of Letters Patent No. 590,228, datedSeptember 21, 1897.

Application filed Julie 24:, 1896. st lifill NO. 596,771 (N0 model.)

To (0Z6 whom it may concern:

Be it known that I, WALTER IL KNIGHT, a eitizen of the United States,residing at New Brighton, in the county of Richmond and State of NewYork, have invented certain new and useful Improvements in Iluid-Pressure Motors, of which the following is a specification.

My invention relates to means for automatically controlling the supplyof fuel to the heater of a compressed-air motor in order that thequantity of fuel burned and the degree of heat generated will be inproper proportion to the amount of work being done.

In the particular form of mechanism which I have illustrated in theaccompanying drawing by a diagrammatic View I have provided means foropening the throttle of the compressed-air reservoir and shifting thevalvecontrolling device (the reversing-link) simultaneously with theopening of the cock which controls the supply of oil to an oil-heaterwhich is adapted to heat the compressed air on its way to the motor.

In the drawing, A is a compressed-air reservoir, and B is thethrottle-valve.

O is the heater-coil, communicating with the reservoir A through pipe Dand with the distributing-chest E of the engine-cylinder F through thepipe G.

H is the oil-burner, supported beneath the heating-coil O, and H is theoil-supply pipe leading from the oil-reservoir K.

L is a turning valve or cook in the oil-supply pipe II.

M is the reversing-link of the engine, by means of which the engine canbe run in either direction or stopped entirely.

N is the hand-lever, which controls the opening and closing of thethrottle-valve I3 by means of the connecting-link N,and the shift ing ofthe link M through lever O and links 0 O and bell-crank O and theopening and closing of the oil-cock L through the eonnecting-rod P.

\Vhen the throttle B is closed and the link M is in central position,the oil-cock L is nearly closed, shutting off the main supply of oil andallowing only a sufficient quantity of oil to pass to keep the burnerlighted. lVhen the handle is shifted to open the throttle-valve and runthe engine in either direction, the oil-valve L will be opened toincrease the flame of the burner for heating the air which is suppliedto the engine-cylinder. If the speed of the engine is reduced, thesupply of oil and heat of the heater will be proportionately reduced.

Though I have shown but one form of mechanism for automaticallycontrolling the supply of oil to the burner in proportion to the amountof work being done by the motor, I would have it understood that I donot limit myself to this specific mechanism; neither do I limit myselfto the particular form of valve-controlling devicethe reversing-linkmotion.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is-

1. The combination of a motor, suitable valve-controllin g devices forthe motor,a fluidreservoir, a heater communicating with the reservoirand with the motor, a throttle-valve, a burner for the heater, and ahand-operated device for simultaneously controlling the

